title: Cytokines, chaperones and neuroinflammatory responses in heroin-related death: what can we learn from different patterns of cellular expression?
abstract: Heroin (3,6-diacetylmorphine) has various effects on the central nervous system with several neuropathological alterations including hypoxic-ischemic brain damage from respiratory depressing effects and neuroinflammatory response. Both of these mechanisms induce the release of cytokines, chemokines and other inflammatory mediators by the activation of many cell types such as leucocytes and endothelial and glial cells, especially microglia, the predominant immunocompetent cell type within the central nervous system. The aim of this study is to clarify the correlation between intravenous heroin administration in heroin related death and the neuroinflammatory response. We selected 45 cases among autopsies executed for heroin-related death (358 total cases); immunohistochemical studies and Western blotting analyses were used to investigate the expression of brain markers such as tumor necrosis factor-α, oxygen-regulated protein 150, (interleukins) IL-1β, IL-6, IL-8, IL-10, IL-15, cyclooxygenase-2, heat shock protein 70, and CD68 (MAC387). Findings demonstrated that morphine induces inflammatory response and cytokine release. In particular, oxygen-regulated protein 150, cyclooxygenase-2, heat shock protein 70, IL-6 and IL-15 cytokines were over-expressed with different patterns of cellular expression.
authors.affiliation: Department of Forensic Pathology, University of Foggia, Ospedale Colonnello D'Avanzo, Viale degli Aviatori 1, Foggia 71100, Italy. vfinesc@tin.it.
authors.forename: Margherita
authors.initials: M
authors.lastname: Neri
authors.forename: Laura
authors.initials: L
authors.lastname: Panata
authors.forename: Mauro
authors.initials: M
authors.lastname: Bacci
authors.forename: Carmela
authors.initials: C
authors.lastname: Fiore
authors.forename: Irene
authors.initials: I
authors.lastname: Riezzo
authors.forename: Emanuela
authors.initials: E
authors.lastname: Turillazzi
authors.forename: Vittorio
authors.initials: V
authors.lastname: Fineschi
mesh_terms: D015415:Biomarkers / Q000378:metabolism; D001921:Brain / Q000378:metabolism*; D016207:Cytokines / Q000235:genetics* / Q000378:metabolism; D005260:Female; D005786:Gene Expression Regulation / Q000235:genetics*; D003932:Heroin / Q000009:adverse effects*; D006801:Humans; D007249:Inflammation / Q000235:genetics* / Q000378:metabolism; D008297:Male; D018832:Molecular Chaperones / Q000235:genetics* / Q000378:metabolism*
chemical_list: D015415:Biomarkers; D016207:Cytokines; D018832:Molecular Chaperones; D003932:Heroin